高级搜索

HRT对UASB厌氧反硝化脱氮的影响

,  ,  ,  , 

downloadPDF

上一篇

下一篇

吴姣姣, 黎远梅, 谭东梅, 彭宏, 肖鸿. HRT对UASB厌氧反硝化脱氮的影响[J]. 环境工程学报, 2018, 12(5): 1510-1516. doi: 10.12030/j.cjee.201711092
引用本文: 吴姣姣, 黎远梅, 谭东梅, 彭宏, 肖鸿. HRT对UASB厌氧反硝化脱氮的影响[J]. 环境工程学报, 2018, 12(5): 1510-1516. doi: 10.12030/j.cjee.201711092
shu
WU Jiaojiao, LI Yuanmei, TAN Dongmei, PENG Hong, XIAO Hong. Effects of HRT on anaerobic denitrification in UASB[J]. Chinese Journal of Environmental Engineering, 2018, 12(5): 1510-1516. doi: 10.12030/j.cjee.201711092
Citation: WU Jiaojiao, LI Yuanmei, TAN Dongmei, PENG Hong, XIAO Hong. Effects of HRT on anaerobic denitrification in UASB[J]. Chinese Journal of Environmental Engineering, 2018, 12(5): 1510-1516. doi: 10.12030/j.cjee.201711092
shu

HRT对UASB厌氧反硝化脱氮的影响

  • 1.

    四川农业大学环境学院,成都 611130

  • 基金项目:

    四川省教育厅科研项目（16ZB0051）

Effects of HRT on anaerobic denitrification in UASB

  • 1.

    College of Environment,Sichuan Agriculture University, Chengdu 611130, China

  • Fund Project:

  • 摘要: 在反硝化脱氮的影响因素方面，研究多集中在碳源种类和碳氮比（C/N）2 个方面，而对水力停留时间（HRT）的影响很少有报道。采用UASB 作为厌氧反硝化反应器，进水NO3--N 为50 mg·L-1，C/N 比固定为1.5，分别以葡萄糖和乙酸钠作碳源，研究HRT 对反硝化效果的影响。结果表明：当外加碳源为葡萄糖时,最佳HRT为6 h,此时NO3--N和TN的去除效果最好,去除率分别为79.5%和63.8%,出水NO2--N和NH4+-N浓度分别为4.69 mg·L-1和2.22 mg·L-1;当外加碳源为乙酸钠时,最佳HRT为4 h,对应的NO3--N和TN去除率分别为99.0%和91.4%,出水NO2--N和NH4+-N浓度分别为3.08 mg·L-1和0.47 mg·L-1。HRT对反硝化效果有显著影响,且跟碳源种类有关。HRT会影响反硝化菌、反硝化异化还原成铵（DNRA）细菌和其他异养菌之间的平衡。
    Abstract: As regards influencing factors of nitrogen removal by denitrification, attentions have been focused on two aspects: carbon source type and carbon/nitrogen ratio（C/N）. However, few reports referred to hydraulic retention time (HRT). In present work, effects of HRTs on anaerobic denitrification in UASB reactor were investigated. Nitrate concentration in influent was 50 mg·L-1 and the C/N ratio was 1.5. Glucose and sodium acetate were used as the sole carbon source, respectively. The experimental results showed that when the carbon source was glucose, the optimal HRT was 6 h, corresponding removal rates of NO3--N and TN were 79.5% and 63.8%, respectively. NO3--N and NH4+-N concentrations in effluent were 4.69 mg-1 and 2.22 mg·L-1, respectively. When the carbon source was sodium acetate, the optimal HRT was 4 h, corresponding removal rates of NO3--N and TN were 99.0% and 91.4%, respectively. NO2--N and NH4+-N concentrations in effluent were 3.08 mg·L-1 and 0.47 mg·L-1, respectively. The present study concluded that HRT, combined with carbon source types, had a significant effect on denitrification and HRT affected the balance among denitrifying bacteria, bacteria responsible for dissimilatory reduction of nitrate to ammonium (DNRA) and other heterotrophic bacteria.
  • 加载中
  • [1] 李文龙,杨碧印,陈益清,等.不同外加碳源反硝化滤池的深度脱氮特性研究[J].水处理技术,2015,41(11):82-85
    [2] ZHAO Y, ZHANG B, FENG C, et al.Behavior of autotrophic denitrification and heterotrophic denitrification in an intensified biofilm-electrode reactor for nitrate-contaminated drinking water treatment[J].Bioresource Technology,2012,107:159-165 10.1016/j.biortech.2011.12.118
    [3] AKUNNA J C, BIZEAU C, MOLETTA R.Nitrate and nitrite reduction with anaerobic sludge using various carbon sources:Glucose,glycerol,acetic acid,lactic acid and methanol[J].Water Research,1993,27(8):1303-1312 10.1016/0043-1354(93)90217-6
    [4] RUIZ G, JEISON D, CHAMY R.Development of denitrifying and methanogenic activities in USB reactors for the treatment of wastewater:Effect of COD/N ratio[J].Process Biochemistry,2006,41(6):1338-1342 10.1016/j.procbio.2006.01.007
    [5] CHIU Y C, CHUNG M S.Determination of optimal COD/nitrate ratio for biological denitrification[J].International Biodeterioration & Biodegradation,2003,51(1):43-49 10.1016/S0964-8305(02)00074-4
    [6] 彭宏,刘维仪,刘舒心,等.低碳氮比对生物膜-电极反应器反硝化的影响[J].环境工程学报,2015,9(7):3263-3268
    [7] 国家环境保护总局.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002:53-74
    [8] GUO Y, GUO L, MEI S, et al.Effects of hydraulic retention time (HRT) on denitrification using waste activated sludge thermal hydrolysis liquid and acidogenic liquid as carbon sources[J].Bioresource Technology,2017,224:147-156 10.1016/j.biortech.2016.11.056
    [9] 高廷耀,顾国维,周琪.水污染控制工程:下册[M].4版.北京:高等教育出版社,2015:170
    [10] 殷芳芳,王淑莹,昂雪野,等.碳源类型对低温条件下生物反硝化的影响[J].环境科学,2009,30(1):108-113
    [11] 曹相生,钱栋,孟雪征.乙酸钠为碳源时的污水反硝化规律研究[J].中国给水排水,2011,27(21):76-79
    [12] HUANG B, FENG H, WANG M, et al.The effect of C/N ratio on nitrogen removal in a bioelectrochemical system[J].Bioresource Technology,2013,132:91-98 10.1016/j.biortech.2012.12.192
    [13] HENZE M.Capabilities of biological nitrogen removal processes from wastewater[J].Water Science & Technology,1991,23:669-679
    [14] MATEJU V, CIZINSKA S, KREJEI J, et al.Biological water denitrification: A review[J].Enzyme & Microbial Technology,1992,14(3):170-183 10.1016/0141-0229(92)90062-S
    [15] 郑平,徐向阳,胡宝兰.新型生物脱氮理论与技术[M].北京:科学出版社,2004:55-75
    [16] 韦宗敏,黄少斌,蒋然.碳源对微生物硝酸盐异化还原成铵过程的影响[J].工业安全与环保,2012,38(9):4-7 7
    [17] KRISHNA-MOHAN T V, NANCHARAIAH Y V, VENUGOPALAN V P, et al.Effect of C/N ratio on denitrification of high-strength nitrate wastewater in anoxic granular sludge sequencing batch reactors[J].Ecological Engineering,2016,91:441-448 10.1016/j.ecoleng.2016.02.033
    [18] 苑泉,王海燕,刘凯,等.HRT对城市污水厂尾水反硝化深度脱氮的影响[J].环境科学研究,2015,28(6):987-993
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  2508
  • HTML全文浏览数:  2228
  • PDF下载数:  276
  • 施引文献:  0
出版历程
  • 刊出日期:  2018-05-19

HRT对UASB厌氧反硝化脱氮的影响

  • 1. 四川农业大学环境学院,成都 611130
基金项目:

四川省教育厅科研项目（16ZB0051）

摘要: 在反硝化脱氮的影响因素方面，研究多集中在碳源种类和碳氮比（C/N）2 个方面，而对水力停留时间（HRT）的影响很少有报道。采用UASB 作为厌氧反硝化反应器，进水NO3--N 为50 mg·L-1，C/N 比固定为1.5，分别以葡萄糖和乙酸钠作碳源，研究HRT 对反硝化效果的影响。结果表明：当外加碳源为葡萄糖时,最佳HRT为6 h,此时NO3--N和TN的去除效果最好,去除率分别为79.5%和63.8%,出水NO2--N和NH4+-N浓度分别为4.69 mg·L-1和2.22 mg·L-1;当外加碳源为乙酸钠时,最佳HRT为4 h,对应的NO3--N和TN去除率分别为99.0%和91.4%,出水NO2--N和NH4+-N浓度分别为3.08 mg·L-1和0.47 mg·L-1。HRT对反硝化效果有显著影响,且跟碳源种类有关。HRT会影响反硝化菌、反硝化异化还原成铵（DNRA）细菌和其他异养菌之间的平衡。

English Abstract

参考文献 (18)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心